The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Live Chat Feature
by Admin
Yesterday at 09:52 PM
Safety at heights?
by gfretwell
Yesterday at 07:16 PM
failed home inspection.
by gfretwell
Yesterday at 07:03 PM
Webmaster > Admin
by Admin
Yesterday at 05:49 PM
Old Bath Fan
by gfretwell
Yesterday at 01:38 AM
New in the Gallery:
Desk-mounted "power-board"
Top Posters (30 Days)
Admin 33
HotLine1 21
Ruben Rocha 16
gfretwell 15
Trumpy 13
Who's Online
0 registered (), 0 Guests and 178 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#69129 - 08/29/06 04:09 AM feeder protection
carranoelectric Offline
Junior Member

Registered: 08/28/06
Posts: 4
Loc: stratford ct
Is the secondary feeder from a 75 kva xfrm protected from the primary breaker? I have a 100 amp 480 v breaker on the primary with a 200 amp 208 v secodary to a panel. Do I need a 200 amp main or can I use main lug and have the 100 amp breaker protect the 200 amp feeder?

[This message has been edited by carranoelectric (edited 08-29-2006).]

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#69130 - 08/29/06 04:27 AM Re: feeder protection
Ron Offline
Member

Registered: 03/13/02
Posts: 577
Loc: White Plains, NY
NEC 2002 240.21(C)(1) says you need a breaker on the secondary within a limited distance.
_________________________
Ron

Top


ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals